Adjustable sash-lock.



UNITE STATES PATENT UFFltClliL LEWIS ELMER DE NEEEGAARD, OE PORTCHESTER, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO TECHNOLOGY SALESC0,, INC., 013 NEW YORK, N. Y.

ADJUSTABLE SASI'I-LOCK.

Specification of Letters Patent.

Application filed July 19, 1912.

Patented Sept. 2, 191 3.

Serial No. 710,443.

To all whom it may concern Be it. known that T, Lnwis ELMER or.Nnnnoaann, a citizen of the United States, residing in the city of PortChester, county of d'vestchestcr, and State of New York, have invented.certain new and useful linprovcments in Adjustable Sash-Locks, of whichthe following is a full, clear, and exact description, ret'erence beinghad to the accol'npanying drawings, forming part of this specification.

This invention relates to improvements in sash locks and particularly tothat class of sash locks comprising two members slidably connected toeach other adapted to clamp the device between the outer sash and theframe molding of a window so as to secure the sashes in position, andits main object is to provide a sash lock of a simple and inexpensivectmstruction, adapted to he used in connection with usual sizes ofwindows.

A further object of this invention is to provide .in a sash lock of thekind described comprising two members each having a serrated flange,means for autmnatically moving one of the flanges out of engagement fromits respective clamped surface, to in sure the free up and down motionof the window sashes.

A still further object is to provide in a sash lock comprising twoclamping members slidably connected to each other, improved means foradjusting the range of the device inde 'iendently oil. the operatingmeans.

l Vith these and other objects in view as will more fully appear as thedescription proceeds, this invention consists in certain constructionsand arrangements of parts such as will he hereinafter fully describedand claimed in the appended claims.

The main object ot a device of the character oi. the one to which thisinvention re'lers is to fasten the sash in any position and to preventthe same from being opened from the outside. Several devices havingmeans for clamping the outer sash ot' a window against the frame moldinghave been hereto't'ore made, and among others I. may cite a sash loclc'lorming the object of an application iior a patent previously filed byme having for title Sash lock, Serial No. (576,916, liled Feb. 10, 1912,of which the present device represents an imprmement. In the (lrawin'gspertaining to said applicatiou, I show an extension adjustment forrendering the device adaptable to any size of window, said adjustmentbring; obtaincd by fixing the pivot ol? the canractinp; member a i;dilt'e'rent places on the bearing plate; the rclation between saidcam-acting member and the adjustable )late remaining" always the same. Ihave l'ound however the construction and operation oi said extensiontltljlll-iii mentto be rat-her complicated and not readily understood byeverybody; :turthermorc, I found that by adopting the cmistruct'ionforming the object of the present invention, the cost of manufacturingthe device could be reduced and at the same time its constructionsimplified. Tn putting into practical use the sash lock forming theobject of the said previous application, 1 also 't'ound that theoperation of the same was not entirely satisfactory inasmuch as whenretracting the bearing plate by means of the cam-acting member, thebearing plate had to be pushed by hand away from its clamping positionin order to entirely tree the lower sash and avoid the scraping of saidadjusting plate against the inner molding when moving said sash up ordown; this evidently constitutes quite an inconvenience because saidshitting by hand is liable to be forgotten quite often and the innermolding, of a window frame scratched on account of it. Tn designing myimproved device, l have sought: to avoid these impcr'tcctiims and l haveotherwise improved the const ruction of my lock as will. be apparentFrom the forthcoming description.

Referring to the drawings, l in'urc l is a front view in elevation of mydevice as applied to a window sash in its clamping: posi tion; Fig. 2 isa front view in elevation ol' the same showing the cam-acting membertm'ned around on the device ready to be adjusted for extension; Fig. 3is a front view in elevation of the bearing member showing; a springwhich may be used for shifting the same when the device is released fromits clamping position, Fig. 4- is a side sectional view in elevation ofthe same; l ies. a) and (3 are respectively a side view in elevation,and a )lan view from the top of the same; Fig. 71s a front view inelevation of the adjustable member; Fig. 8 is a cross sectional planview of the same; Fig. l) is a plan view of the dog used in connectionwith the adjustable member; Fig. 10 is a side sectional view of thesame; Fig. 1] is a detail front view in elevation showing differentmeans for shifting the bearing plate away from its clamping positionwhen the clamping action of the device is released; and Fig. 12 is adetail plan view from the top of the same.

My device is essentially composed of a bearing member 20, to which isslidably connected an adjustable member 21, controlled by an operatingmember 22 mounted on said bearing member 20; part 21 may be slidablyconnected to part 20 in any convenient manner, and the drawings show apreferred form of construction in which part 21 is retained by part 20by means of an upper flange 23 and lower flanges 24, 25, bent over thesame. Bearing member 20 is provided with a flange 26 adapted to restagainst the frame molding and adjustable member 21 is provided with aninner flange 27 adapted to rest against the outer sash. Said flanges areprovided with serrations 28, 29 directed outwardly and preferably bothupwardly and downwardly, and adapted therefore to lock the deviceagainst the upward and downward motion. One of the said slidable membersand preferably the inner member of bearing member 20, is provided with aright angle lug or projection 30, having longitudinal elongated slots31, 32; said slots are used for the passage of screws 83 retaining thedevice attached to the inner sash of a window.

The drawings show lug or projection 30 at the lower part of the device,the same being intended for the usual style of window in which the innersash normally occupies the lower section of the same; by means of lug orprojection 30, this device can there fore be attached to the top rail ofsaid inner sash, as illustrated in Fig. 1.

The openings for the passage of the screws are preferably made elongatedas shown, to allow the device to be slightly moved when released fromits clamping position, so as to detach both flanges from the respectivesurfaces formerly clamped, and to permit the free motion of the windowsashes. To this object I provide means exerting a pressure against theinner molding and therefore pushing the device away from the same whenthe cam-acting member is operated, so as to release its clamping action.This object may be attained in any suitable manner, but I prefer to use,as shown in the drawings, a spring 34 attached to flange 36, andprojecting through opening 35, provided in the same, said springexerting a pressure against the inner molding of the window frame; Ihave found said spring to be both inexpensive and eflicient for thepurposes specified.

To effect the locking of the device, I provide a cam-slotted member 22having a slot 36 and pivoted at 37 to bearing member 20.

The same can be pivotally mounted in any suitable manner, but I preferto mount the same in the way shown in the drawings, Fig. 4, wnere it isseen that the pivotis formed by forcing out metal from part 20, so as toform a circular projection, and then after having inserted part 22 overthe same by bending the sides of said projection over said part 22forming retaining flange 38. These operations can be entirely performedby dies, the result being a very strong construction at an exceedinglylow cost.

It is obvious that in a device of moderate size in which the motion ofthe adjustable member is obtained by means of a cam" of the shapeshownin the figures, the range of said motion is necessarily limited if thelock is expected to exert a strong clamping action; and therefore if thedevice is to be adapted for every size window it will be necessary toprovide an extension adjustment for the same. I have devised a verysimple and inexpensive way of eflectin this adjustment, which is shownin the rawings and which I will now describe.

Part 21 is provided with a series of Open ings 39, equally distanced,and part 20 is provided with a notch 40 providing a clear space adaptedto receive an element 41, which can be loosely mounted on said part 21.Said element is provided with depend ing lugs 42, 48, adapted to beinserted throughany two openings 39; said element can thereforebeinserted through part 21 at different points according to the number ofopenings 89 provided. Furthermore, said element is provided with anupwardly projecting lug 44 adapted to enter through slot 36 in member22, and preferably bent at 45 over the peripheral portion 46 of saidpart 22.

From the drawings it is seen that when said element 41 is in one of itsoperative positions, the same is retained between adjustable member 21and cam-acting member 22, it being impossible for the same to come away.In order to adjust the device to different sizes of windows, at the endof slot 36 in cam-acting member 22, I provide an opening 47 large enoughto clear element 41. If said cam-acting member 22 is rotated far enoughin the releasing direction, said opening 47 will uncover element 41, asshown in Fig. 2, and said element can then be removed by hand; parts 20and 21 can then be adjusted by hand to the desired width, element 41reinserted through the openings 39, which are uncovered by opening 47,and member 22 rotated in the reverse direction causing slot 36 toreengage lug 44 of element 41.

When the device has been attached to a window after having been adjustedto the proper size, it is impossible for element 41 to come awayinasmuch as handle 48 of member 22 striking against the outer windowsash will prevent the rotation of part 22 at a point far enough touncover element 41; permanency in the operation of the device istherefore assured.

As hereinbefore explained, when camacting member 22 is rotated towardthe left so as to release part 21, spring 3st pressing against the innermolding will force flange 20 away from the same; therefore the devicewill auton'latically clear both the surfaces which were formerly clampedby the same. The shifting of part 20 away from the inner molding can beeffected in many different ways; for instance, in Figs. .11 and 12, Ishow one of the ays which may be adopted in place of spring 3st. in saidfigures 4-9 is an element pivotally mounted at 50 to lug 30; saidelement has an arm 51 resting against the inner molding of the window towhich the device is applied, and a lug 52 upwardly projecting in thesame plane with cam-acting member 22. hen said camacting member 22 isrotated far enough toward the left so as to release the adjustablemember, nose of the same will exert a pressure against lug 52 andtherefore by action through arm 51 against the molding, will cause both51 and lug 30 to move away from said molding, thus causing the flange ofthe bearing member to clear the same.

In designing my device, I have carefully avoided the use of threadedparts which are usually more costly to manufacture than die producedsheet metal parts, and I also have avoided as much as possible the useof parts projecting from the surface of the device, which would renderthe same less attractive in design and appearance.

The slotted member controlling the sliding relative motion of the twoclamping members of which my device is composed, can be made with adetached handle or with a handle integral therewith, as desired; and theslot provided in the same may be caused tofollow any suitable curvewhich will fulfil the requirements of the device.

It is to be understood that my device can be modified in its variousdetails without substantially departing from the spirit of my invention,and l reserve myself the right of bringing to the same all those changesand modifications which may be rendered necessary or useful to meetspecial requirements of individual cases, and which fairly enter intothe scope of the appended claims.

I claim:

1. In a sash lock, the combination of a bearing plate, an adjustableplate slidably connected thereto, a cam-acting member pivotally mountedon said bearing plate, and a member actuated thereby adapted to be fixedon said adjustable plate at different points; for the purposes as setforth.

2. In a sash lock, th combination of a bearing plate, an adjustableplate slidably connected thereto provided with a series of slots, aslotted cam-acting member pivotally mounted on said bearing plate, andan element having prongs adapted to be inserted through said slots, saidelement being rctained between said adjustable plate and said cam-actingmember, and having a part projecting through the slot of said cam-actingmember; substantially as set forth.

3. .In a sash lock, the combination of a bearing plate, an adjustableplate slidably connected thereto provided with a series of slots, atcam-acting nuanbcr pivotally mounted on said bearing plate provided witha slot and with an enlarged opening at. the end of said slot, and anelement adapted to be inserted through said opening, said element havingprtmgs entering said slots and a part projecting through the slot ofsaid canracting member, and being retained between said adjustable plateand said cam-acting member; substantially as described, and for thepurposes as set forth.

4. in a sash locl; and in combination with a bearing member adapted tobe movably attached to the lower sash of a window, an adjustable memberslidably connected thereto, and means for operating the same, means forautomatically moving said bearing member away from its clamping positionwhen the clamping action of said adjustable memher is released by saidoperating means; for the purposes as set forth.

5. In a sash lock the combination of a bearing plate and an adjustableplate slidably connected to mch other having serrated flanges, means foroperating the same, a hug projecting from one of the said plates formovably attaching the device to the inner sash of a window and a springattached to the said plate tending to move the same out of clampingposition; substantially as set forth.

(3. in a sash lock the combination of a bearing plate, provided with atug adapted to movably attach the same to the inner sash of a window, anadjustable plate slidably connected to said bearing plate, a camactingmember pivotally mounted on said bearing plate controlling the motion ofsaid bearing plate, and means for autoimltically pushing said bearingplate out of clamping position when said adjustable member is retractedby said cam-acting member; sub stantially as set forth.

7. In a sash lock the combination of a bearing plate, provided with alug adapted to movably attach the same to the inner sash of a window, anadjustable plate slidably connected thereto, pro\"ided with a series ofslots, serrated flanges integral with said plates, a slotted cam-actingmember pivotally mounted on said bearing plate, an element having prongsadapted to be inserted through said slots, said element being retainedbetween said adjustable plate and said cam-acting member, and having apart projecting through the slot of said cam-acting member, and a springprojecting through the flange of said bearing member tending to push thesame away from its clamping position; substantially as set forth.

8. In a sash lock the combination of a bearing plate provided with a lugadapted to movably attach the device to the inner sash of a window, anadjustable plate slid ably connected thereto provided with a series ofslots, serrated flanges integral with said plates, a can1-acting memberpivotally mounted on said bearing plate provided with a slot and with anenlarged opening at the end of said slot, an element adapted to beinserted through said opening, said elementhaving prongs entering saidslots, and a part projecting through the slot of said cam-acting memberand being retained between said adjustable plate and said camact'ingmember, and a spring projecting through the flange of said bearing platetending to push the same away from its clamping position.

In testimony whereof I aflix my signature in presence of two Witnesses.

LEWIS ELMER DE NEERGAARD.

l/Vitnesses:

A. ABELOFF, Louis A. FREEDMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of ratents,

Washington, D. G. r

